Environment-friendly gas tank device of gas-insulated switchgear

Abstract

The utility model discloses an environment-friendly gas tank device of a gas-insulated switchboard, which particularly relates to the technical field of gas-insulated switchboards and comprises a lower blocking box, three connecting pieces are fixedly connected to the outer side of the lower blocking box, a clamping box is fixedly connected to the front side of the lower blocking box, a bolt is inserted into the clamping box, and an upper blocking box is hinged to one side of the lower blocking box. Three anti-slip strips are fixedly mounted on the inner walls of the connecting piece and the upper blocking box, and a gas tank mounting mechanism is arranged in the lower blocking box; the gas tank mounting mechanism comprises a nitrogen tank, the outer side of the nitrogen tank is fixedly connected with the outer sides of a plurality of anti-slip strips, one side of the nitrogen tank is fixedly connected with an output pipe, and the outer side of the output pipe is in threaded connection with a connecting pipe. According to the utility model, through the arrangement of the gas tank installation mechanism, the nitrogen tank is rapidly installed, so that the sealing performance of the nitrogen tank and the gas transmission pipe is improved, nitrogen can completely enter the interior of the gas-filled cabinet main body, the situation of nitrogen leakage is avoided, the safety of gas transmission of the gas tank is improved, and meanwhile, the nitrogen is used for replacing common SF6 gas, so that the cost is reduced. The pollution to the environment is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of gas-insulated switchgear, and more specifically, to an environment-friendly gas box device for a gas-insulated switchgear. Background Technique

[0002] A gas-insulated switchgear is a kind of power switchgear. The main switch can be either a vacuum circuit breaker with a permanent magnet mechanism or a vacuum circuit breaker with a spring mechanism. The whole cabinet combines air insulation with a sulfur hexafluoride gas compartment, and has the characteristics of compact structure, flexible operation, reliable interlock, etc. It is both compact and expandable, and is suitable for various different application scenarios. Due to the advantages of being not affected by the external environment and using compressed gas insulation which is conducive to the development towards miniaturization, the gas-insulated switchgear is more and more widely used in the distribution industry.

[0003] Most of the existing gas box devices for gas-insulated switchgears are in the form of ring main unit gas boxes. First, the upper and lower, left and right, and front panels are welded together, and then all the components are assembled. Finally, the rear panel is welded on. Although this kind of gas box device for gas-insulated switchgear can meet the conditions of high altitude and harsh environment, when a component inside the gas box fails or is damaged, the entire gas box can only be returned to the manufacturer and cannot be repaired on site; this increases the transportation cost and maintenance cost, brings difficulties to the operation and maintenance personnel, and causes huge losses to the users.

[0004] After retrieval, the Chinese patent with the publication number CN216215417U discloses an environment-friendly gas box device for a gas-insulated switchgear. The utility model designs the main external mechanisms on the front side of the gas box, and designs an assembled sealing aluminum plate on the rear side of the gas box. When a component inside the gas box fails, the aluminum plate on the rear cover can be removed for maintenance, which not only solves the problem that the ring main unit cannot be repaired on site, but also reduces the cost and material waste, meeting the current requirement concept of environmental protection and conservation.

[0005] However, when the above gas box device is actually used, the gas tank inside the gas box needs to be replaced in time, but the process of replacing the gas tank may be time-consuming, affecting the efficiency of gas filling inside the gas-insulated switchgear, and affecting the use of the gas-insulated switchgear. Content of the Utility Model

[0006] In order to overcome the above-mentioned defects of the prior art, the utility model provides an environment-friendly gas box device for a gas-insulated switchgear to solve the problems put forward in the above background technique.

[0007] To achieve the above object, the utility model provides the following technical solutions:

[0008] Environmentally friendly gas box device for gas-insulated switchgear, including a lower baffle box. Three connectors are fixedly connected to the outer side of the lower baffle box. A card box is fixedly connected to the front side of the lower baffle box. A plug pin is inserted into the card box. An upper baffle box is hinged to one side of the lower baffle box. Three anti-slip strips are fixedly installed on both the connector and the inner wall of the upper baffle box. A gas tank installation mechanism is arranged inside the lower baffle box; the gas tank installation mechanism includes a nitrogen tank. The outer side of the nitrogen tank is fixedly connected to the outer sides of multiple anti-slip strips. An output pipe is fixedly connected to one side of the nitrogen tank. A connecting pipe is threadedly connected to the outer side of the output pipe. Multiple push blocks are fixedly connected to the inner wall of the connecting pipe. The multiple push blocks are annularly arrayed on the inner wall of the connecting pipe. Two pressing blocks are fixedly installed on the outer side of the connecting pipe. The two pressing blocks are symmetrically arranged on the outer side of the connecting pipe. An air delivery pipe is inserted into the connecting pipe. An inner ring is fixedly connected to one side of the air delivery pipe. A push ring is slidably connected to the outer side of the inner ring. An air bag is fixedly connected to one side of the push ring. A valve is installed on the outer side of the air delivery pipe.

[0009] By adopting the above technical solution: the nitrogen tank can be stably placed. At the same time, the installation process of the nitrogen tank and the air delivery pipe can be made quick through the output pipe, maintaining the connection airtightness between the nitrogen tank and the air delivery pipe, and reducing the possible air leakage problem when filling nitrogen into the gas-insulated switchgear.

[0010] As a further description of the above technical solution: One side of the lower baffle box is fixedly connected to the main body of the gas-insulated switchgear. A sealing mechanism is arranged on the top of the main body of the gas-insulated switchgear. The sealing mechanism includes a motor. The outer side of the motor is fixedly connected to the upper surface of the main body of the gas-insulated switchgear. The output end of the motor is fixedly connected to a first sealing plate. A second sealing plate is fixedly connected inside the main body of the gas-insulated switchgear. A filter plate is fixedly connected to the top of the main body of the gas-insulated switchgear.

[0011] By adopting the above technical solution: when it is necessary to open and check the main body of the gas-insulated switchgear, the pressure of the main body of the gas-insulated switchgear can be released through the first sealing plate and the second sealing plate, making the opening of the main body of the gas-insulated switchgear safer.

[0012] As a further description of the above technical solution: A box door is hinged to the outer side of the main body of the gas-insulated switchgear. A sealing strip is fixedly connected to one side of the box door.

[0013] By adopting the above technical solution: the opening and closing part of the main body of the gas-insulated switchgear and the box door can be sealed to a certain extent, further improving the sealing performance of the main body of the gas-insulated switchgear.

[0014] As a further description of the above technical solution: A sealing gasket is fixedly connected to one side of the main body of the gas-insulated switchgear. A baffle is fixedly connected to the outer side of the main body of the gas-insulated switchgear.

[0015] By adopting the above technical solution: when the lower baffle is installed on the main body of the gas-filled cabinet, it can assist in fixing the lower baffle at the rear side of the main body of the gas-filled cabinet, so that the lower baffle can be stably fixed at the rear side of the main body of the gas-filled cabinet.

[0016] The technical effects and advantages of the present utility model are as follows:

[0017] 1. By setting up the gas cylinder installation mechanism, compared with the prior art, the nitrogen gas cylinder can be quickly installed, the sealing performance of the nitrogen gas cylinder and the gas transmission pipe is improved, nitrogen gas can completely enter the interior of the main body of the gas-filled cabinet, avoiding the situation of nitrogen gas leakage, improving the safety of gas transmission in the gas box, and at the same time using nitrogen gas instead of ordinary SF6 gas to reduce environmental pollution;

[0018] 2. By setting up the sealing mechanism, compared with the prior art, the top of the main body of the gas-filled cabinet can have a pressure relief hole through the rotation of the first sealing plate, reducing the gas pressure inside the main body of the gas-filled cabinet, facilitating the subsequent staff to open the cabinet door, and avoiding excessive internal pressure in the main body of the gas-filled cabinet from causing harm to the staff. Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0020] Figure 2 It is a schematic diagram of the rear structure of the present utility model.

[0021] Figure 3 It is a schematic diagram of the rear structure of the main body of the gas-filled cabinet of the present utility model.

[0022] Figure 4 It is a partial schematic diagram of the connection part of the lower baffle of the present utility model.

[0023] Figure 5 It is a partial schematic diagram of the connection part of the nitrogen gas cylinder of the present utility model.

[0024] Figure 6 It is a schematic diagram of the cross-sectional structure of the gas transmission pipe of the present utility model.

[0025] Figure 7 It is of the present utility model Figure 3 Enlarged view of A.

[0026] The reference numerals are: 1. Lower baffle; 2. Connecting piece; 3. Card box; 4. Plug pin; 5. Upper baffle; 6. Anti-slip strip; 7. Nitrogen gas cylinder; 8. Output pipe; 9. Connecting pipe; 10. Push block; 11. Pressing block; 12. Gas transmission pipe; 13. Inner ring; 14. Push ring; 15. Airbag; 16. Valve; 17. Main body of the gas-filled cabinet; 18. Motor; 19. First sealing plate; 20. Second sealing plate; 21. Filter plate; 22. Cabinet door; 23. Sealing strip; 24. Sealing gasket; 25. Baffle. Detailed implementation mode

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

[0028] The embodiment of the present application discloses an environment-friendly gas box device for an inflatable cabinet, including a lower baffle box 1. Three connectors 2 are fixedly connected to the outside of the lower baffle box 1. A card box 3 is fixedly connected to the front side of the lower baffle box 1. A plug pin 4 is inserted into the card box 3. An upper baffle box 5 is hinged to one side of the lower baffle box 1. Three anti-slip strips 6 are fixedly installed on the inner walls of the connectors 2 and the upper baffle box 5 respectively. A gas tank installation mechanism is arranged inside the lower baffle box 1; the gas tank installation mechanism includes a nitrogen tank 7. The outside of the nitrogen tank 7 is fixedly connected to the outside of multiple anti-slip strips 6. An output pipe 8 is fixedly connected to one side of the nitrogen tank 7. A connecting pipe 9 is threadedly connected to the outside of the output pipe 8. Multiple push blocks 10 are fixedly connected to the inner wall of the connecting pipe 9. The multiple push blocks 10 are annularly arrayed on the inner wall of the connecting pipe 9. Two pressing blocks 11 are fixedly installed on the outside of the connecting pipe 9. The two pressing blocks 11 are symmetrically arranged on the outside of the connecting pipe 9. An air delivery pipe 12 is inserted into the connecting pipe 9. An inner ring 13 is fixedly connected to one side of the air delivery pipe 12. A push ring 14 is slidably connected to the outside of the inner ring 13. An airbag 15 is fixedly connected to one side of the push ring 14. A valve 16 is installed on the outside of the air delivery pipe 12. First, threadedly connect the connecting pipe 9 to the output pipe 8, then place the nitrogen tank 7 inside the lower baffle box 1, and then insert the connecting pipe 9 into the air delivery pipe 12, so that the push blocks 10 inside the connecting pipe 9 can push the push ring 14 and the airbag 15, so that the airbag 15 fills the connection gap between the connecting pipe 9 and the air delivery pipe 12, reducing the possibility of gas leakage during the nitrogen delivery process.

[0029] Refer to Figure 3 and Figure 7 As shown in, one side of the lower baffle box 1 is fixedly connected to an inflatable cabinet main body 17. A sealing mechanism is arranged on the top of the inflatable cabinet main body 17. The sealing mechanism includes a motor 18. The outside of the motor 18 is fixedly connected to the upper surface of the inflatable cabinet main body 17. The output end of the motor 18 is fixedly connected to a first sealing plate 19. A second sealing plate 20 is fixedly connected inside the inflatable cabinet main body 17. A filter plate 21 is fixedly connected to the top of the inflatable cabinet main body 17. The motor 18 drives the first sealing plate 19 to rotate, so that the openings of the first sealing plate 19 and the second sealing plate 20 can overlap and intersect, facilitating the pressure relief and sealing of the inside of the inflatable cabinet main body 17.

[0030] Refer to Figure 1As shown, a cabinet door 22 is hinged to the outside of the gas-insulated switchgear main body 17, and a sealing strip 23 is fixedly connected to one side of the cabinet door 22, ensuring the sealing between the gas-insulated switchgear main body 17 and the cabinet door 22.

[0031] Referring to Figure 3 As shown, a sealing gasket 24 is fixedly connected to one side of the gas-insulated switchgear main body 17, and a baffle 25 is fixedly connected to the outside of the gas-insulated switchgear main body 17, which can assist in the stable installation of the lower baffle box 1.

[0032] Working principle of the present utility model: Before the gas-insulated switchgear is used, first pull out the bolt 4 from the inside of the cartridge 3, rotate and open the upper baffle box 5 from one side of the lower baffle box 1, then screw the connecting pipe 9 onto the outside of the output pipe 8, and then align the connecting pipe 9 threadedly connected to one side of the nitrogen tank 7 with one end of the gas transmission pipe 12 inside the lower baffle box 1 and insert it. At the same time, a plurality of push blocks 10 inside the connecting pipe 9 move the push ring 14 outside the inner ring 13. When the push ring 14 moves, it squeezes the airbag 15, causing the airbag 15 to expand and fully seal the inner wall of the connecting pipe 9. Then press the two pressing blocks 11 to fix the connecting pipe 9 and the gas transmission pipe 12. Rotate the upper baffle box 5 again so that the front clamping block of the upper baffle box 5 is inserted into the inside of the cartridge 3, and then insert the bolt 4 back into the inside of the cartridge 3, so that the connecting member 2 and the plurality of anti-slip strips 6 on the inner wall of the upper baffle box 5 support and fix the outside of the nitrogen tank 7, enabling the nitrogen tank 7 to be stably fixed inside the lower baffle box 1 and the upper baffle box 5. Then open the valve 16 so that the nitrogen tank 7 can transport nitrogen into the inside of the gas-insulated switchgear main body 17, filling the gas-insulated switchgear main body 17 with nitrogen;

[0033] Before the nitrogen tank 7 transports nitrogen into the inside of the second sealing plate 20 through the gas transmission pipe 12, the motor 18 drives the first sealing plate 19 to rotate, so that the opening of the first sealing plate 19 is staggered from the opening of the second sealing plate 20. At the same time, the sealing strip 23 maintains the sealing between the cabinet door 22 and the gas-insulated switchgear main body 17. When it is necessary to open the cabinet door 22, first drive the first sealing plate 19 to rotate through the motor 18 so that the opening of the first sealing plate 19 coincides with the opening of the second sealing plate 20, facilitating the balance of the air pressure inside the gas-insulated switchgear main body 17. Finally, the staff can safely open the cabinet door 22.

[0034] The content not described in detail in the specification belongs to the prior art well-known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited, and conventional equipment can be used. In this technical solution, since the electrical control components not mentioned belong to the prior art, they are not shown in the figure and will not be described here.

[0035] The above are all the preferred embodiments of this application. The protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. Environmentally friendly gas box device for gas-insulated switchgear, comprising a lower baffle box (1), characterized in that: Three connectors (2) are fixedly connected to the outside of the lower gearbox (1). A cartridge case (3) is fixedly connected to the front side of the lower gearbox (1). A bolt (4) is inserted into the cartridge case (3). An upper gearbox (5) is hinged to one side of the lower gearbox (1). Three anti-slip strips (6) are fixedly installed on the inner walls of both the connector (2) and the upper gearbox (5). An air tank installation mechanism is arranged inside the lower gearbox (1). The air tank installation mechanism includes a nitrogen tank (7). The outside of the nitrogen tank (7) is fixedly connected to the outside of multiple anti-slip strips (6). An output pipe (8) is fixedly connected to one side of the nitrogen tank (7). A connecting pipe (9) is threadedly connected to the outside of the output pipe (8). Multiple push blocks (10) are fixedly connected to the inner wall of the connecting pipe (9). Two pressing blocks (11) are fixedly installed on the outside of the connecting pipe (9). An air delivery pipe (12) is inserted into the connecting pipe (9). An inner ring (13) is fixedly connected to one side of the air delivery pipe (12).

2. The environmentally friendly gas cabinet gas tank device according to claim 1, characterized in that: A push ring (14) is slidably connected to the outside of the inner ring (13). An airbag (15) is fixedly connected to one side of the push ring (14). A valve (16) is installed on the outside of the air delivery pipe (12).

3. The environmentally friendly gas cabinet gas tank device according to claim 1, characterized in that: An inflation cabinet main body (17) is fixedly connected to one side of the lower gearbox (1). A sealing mechanism is arranged at the top of the inflation cabinet main body (17). The sealing mechanism includes a motor (18). The outside of the motor (18) is fixedly connected to the upper surface of the inflation cabinet main body (17).

4. The environmentally friendly gas tank device for an inflatable cabinet according to claim 3, wherein: The output end of the motor (18) is fixedly connected to a first sealing plate (19). A second sealing plate (20) is fixedly connected inside the inflation cabinet main body (17). A filter plate (21) is fixedly connected to the top of the inflation cabinet main body (17).

5. The environmentally friendly gas cabinet gas tank device according to claim 3, wherein: A cabinet door (22) is hinged to the outside of the inflation cabinet main body (17). A sealing strip (23) is fixedly connected to one side of the cabinet door (22).

6. The environmentally friendly gas cabinet gas tank device according to claim 3, characterized in that: A sealing gasket (24) is fixedly connected to one side of the inflation cabinet main body (17). A baffle (25) is fixedly connected to the outside of the inflation cabinet main body (17).

7. The environmentally friendly gas cabinet gas tank device according to claim 1, characterized in that: The multiple push blocks (10) are annularly and arrayedly distributed on the inner wall of the connecting pipe (9). The two pressing blocks (11) are symmetrically arranged on the outside of the connecting pipe (9).

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